Bone fusion device



FIG. 1 is a front and top perspective view of a bone fusion device showing our new design;

FIG. 2 is a bottom and rear perspective view thereof;

FIG. 3 is a left side elevation thereof, the side opposite being a mirror image;

FIG. 4 is a top plan view thereof, the bottom being a mirror image;

FIG. 5 is a rear elevation view thereof; and,

FIG. 6 is a front elevation thereof. 

The ornamental design for a bone fusion device, as shown and described. 